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[Bug c/46076] [4.6 regression] constant propagation and compile-time math no longer happening versus 4.4 and 4.5
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 11 Jan 2011 17:02:47 +0000
- Subject: [Bug c/46076] [4.6 regression] constant propagation and compile-time math no longer happening versus 4.4 and 4.5
- Auto-submitted: auto-generated
- References: <bug-46076-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46076
--- Comment #19 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-01-11 17:01:45 UTC ---
Author: rguenth
Date: Tue Jan 11 17:01:37 2011
New Revision: 168665
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168665
Log:
2011-01-11 Richard Guenther <rguenther@suse.de>
PR tree-optimization/46076
* tree-ssa.c (useless_type_conversion_p): Conversions from
unprototyped to empty argument list function types are useless.
* gcc.dg/tree-ssa/pr46076.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr46076.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa.c